[MAIPC] FW: Ailanthus control

Fri Sep 2 20:45:25 PDT 2016

http://www.mdinvasivesp.org/archived_invaders/archived_invaders_2016_08.html

advises us to look for large dead patches of Ailanthus in Maryland. Marc

In an effort to help observers locate areas of Ailanthus infected by V. nonalfalfae, university and federal researchers have described the symptoms of infection to look for in Ailanthustrees (see resources below). These symptoms include rapid or sudden wilting foliage throughout the entire tree followed by defoliation as leaves die. Infected vascular tissue in the sapwood, just beneath the tree's bark, will be an orange-brown color compared to the white to cream color of vascular tissue in healthy trees. If you see stands of tree-of-heaven exhibiting these symptoms, please contact the Maryland Forest Service or the Maryland Invasive Species Council.

Note that Verticillium wilt rarely impacts single trees, instead infecting large distinct areas of declining, dying, and dead trees rapidly. 

From: Todd Hagenbuch [mailto:thagenbuch at arborchem.com] 
Sent: Friday, September 02, 2016 8:50 AM
To: Earl "Bud" Reaves Jr. <ipreav00 at aacounty.org>; Marc Imlay <ialm at erols.com>
Cc: misraspaurs at gmail.com; MA-IPC MA-IPC <maipc at lists.maipc.org>
Subject: RE: [MAIPC] FW: Ailanthus control

Great article, I would say the figure($3,500) used to describe how much it can cost to treat and acre of Ailanthus is very extreme.  I’ve been in vegetation management for 22 years and in most bid situations, I would doubt you would spend more than $500/acre for chemical treatment of Ailanthus even in the most dense stands.  This time of year is prime time to incorporate hack n squirt methods with a 50/50 solution of your favorite glyphosate brand.  Large trees can be treated in this method and the smaller trees can be basal(Pathfinder II RTU) treated with high success rates due to the fact that herbicide is being taken down into the roots this time of year.  Don’t try these same methods in the spring or early summer and expect to control the root systems of Ailanthus.  Don’t get me wrong I am excited about the potential that the Verticillium Wilt could bring.  Ailanthus is public enemy number one when it comes to invasives in my book.  Any help biologically would be great especially on this species.  

Thanks, 

Todd Hagenbuch

Vegetation Management Specialist

Arborchem Products 

133 Portsmouth Circle

Glen Mills, PA 19342

570-401-7098

thagenbuch at arborchem.com <mailto:thagenbuch at arborchem.com> 

www.arborchem.com <http://www.arborchem.com/> 

From: MAIPC [mailto:maipc-bounces at lists.maipc.org] On Behalf Of Earl "Bud" Reaves Jr.
Sent: Friday, September 02, 2016 8:27 AM
To: Marc Imlay
Cc: misraspaurs at gmail.com <mailto:misraspaurs at gmail.com> ; MA-IPC MA-IPC
Subject: Re: [MAIPC] FW: Ailanthus control

Marc\Chris et al, The latest info I believe is in the August Invader of the Month see link below.Aaron Cook, the author, may have the most recent but i don't suppose anything has changed in the last month.  Aaron may be on forest fire duty out west right now somay not be imediately available. 

Ailanthus August\16 IOTM <http://www.mdinvasivesp.org/archived_invaders/archived_invaders_2016_08.html> 

Earl "Bud" Reaves,

County Forester

Licensed Forester, ISA Certified Arborist* 

2664 Riva Road

Annapolis, Maryland 21401 MS #6201

410.222.6707  Fax: 410.222.7752

http://www.mdinvasivesp.org/index.html

Emerald Ash Borer Info <http://www.emeraldashborer.info/index.cfm#sthash.YlSBwhCI.dpbs> 

On Fri, Sep 2, 2016 at 8:04 AM, Marc Imlay <ialm at erols.com <mailto:ialm at erols.com> > wrote:

Any information for Chris?

Marc Imlay, PhD, Chair, MAIPC Biological control working Group Conservation biologist, 

Park Ranger Office, Non-native Invasive Plant Control coordinator.  <mailto:Marc.Imlay at pgparks.com> Marc.Imlay at pgparks.com

(301) 442-5657 <tel:%28301%29%20442-5657>  cell  Natural and Historical Resources Division

The  Maryland-National   Capital   Park  and Planning Commission

Marc Imlay, PhD 
Chair of the Biodiversity and Habitat Stewardship Committee for the Maryland Chapter of the Sierra Club.

From: Rita Misra [mailto:misraspaurs at gmail.com <mailto:misraspaurs at gmail.com> ] 
Sent: Friday, September 02, 2016 6:22 AM
To: Marc Imlay <ialm at erols.com <mailto:ialm at erols.com> >
Subject: Ailanthus control

Marc

I've met you on a few MNPS walks, but you probably wouldn't remember me.  

Do you know whether the verticillium wilt fungus described in 

http://www.tandfonline.com/doi/abs/10.1080/09583157.2015.1023258?journalCode=cbst20 is having much effect in Maryland yet?

Thanks,

Chris Spaur

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